Rotar stands for "Roth Air Car." Ed used two Bell Auto Parts-built 650cc Triumph twins laid on their side. A high-pressure prop was mounted to each engine, creating a cushion of air that allowed Rotar to propel itself on land and water. Directional flaps on the bottom were plywood, and the rear fin was fashioned after Ed's '59 Cadillac. This is an excellent example of the value of Ed Roth's custom cars. This car sold a few years back for over $200,000!
Source: ratfink.com
Image: Pinterest